Industrial Engineering and Production Management
Time study is carried out

All of these
By observing and recording the time taken by the operator for an operation
By breaking up each operation into small elements which are measurable with the help of the measuring device accurately
By finding all the significant informations regarding the job, work place and machine tool etc

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Industrial Engineering and Production Management
The basic difference between PERT and CPM is that

Critical path is determined in PERT only
PERT deals with events and CPM with activities
Guessed times are used in PERT and evaluated times in CPM
Costs are considered on CPM only and not in PERT

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